CN106073872B - Screw - Google Patents
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- Publication number
- CN106073872B CN106073872B CN201610385251.5A CN201610385251A CN106073872B CN 106073872 B CN106073872 B CN 106073872B CN 201610385251 A CN201610385251 A CN 201610385251A CN 106073872 B CN106073872 B CN 106073872B
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- Prior art keywords
- screw
- sub
- female
- hole
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
Abstract
The invention discloses a kind of Screws, including being fixed on female screw of fracture line bonding position bone main body for the sclerite that dissociates and can lock the sub- screw reinforced to free sclerite fixation degree with female screw trailing end cross.Mother's screw is by nut position diagonal through the screw hole of side wall setting and sub- screw mates, sub- screw can screw in female screw tail portion along screw hole and screw out female screw by side wall, sub- screw can continue to screw in free sclerite after screwing out female screw, the final bone main body for screwing in fracture line position.Sub- screw tail cap setting screw thread is matched with screw hole threads, and female screw and sub- screw is made to form firm intersection construction, and the bone main body for being locked in bonding position for keeping free sclerite safe, structure is simple, and easy to operate, damage is small, securely and reliably.
Description
Technical field
The present invention relates to a kind of Medical screw, especially a kind of Screw belongs to the technical field of medical instrument.
Background technique
When closing on diaphysis end fracture or diaphysis boss is fractured, the screw fixing means that disperses at present to volume compared with
The fixed effect of small free sclerite is poor, especially even more so in osteoporosis patient.Thus lead to free fractured type
Position is often moved or even the related screw for fixing of sclerite loosens together.Because sclerite is often smaller, herein also without
Suitable steel plate screw is fixed.
Clinic needs a kind of medical spiral shell of free sclerite that can effectively fix long bone diaphysis end or diaphysis boss
Nail.Sclerite can be effectively fixed on diaphysis by especially needed one kind in osteoporosis patient, avoid sclerite and screw from
The screw of diaphysis abjection.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, a kind of Screw is provided, is incited somebody to action by female screw
Sclerite is fixed on diaphysis, and the screw hole being arranged on through female screw consolidates the reinforcement that sub- screw is at an angle of to sclerite
It is fixed, while female screw, sub- screw, sclerite and diaphysis are locked in an entirety.It is formed in the fixed diaphysis position point of fracture line
Fork expands, and in the lesser three-legged structure of screw exit position, is fixed on free fractured type effectively on diaphysis, and method is simple,
Securely and reliably, it is worthy to be popularized.
According to technical solution provided by the invention, a kind of Screw, including bone is fixed on for the sclerite that dissociates
Female screw of broken line bonding position bone main body and can with female screw trailing end cross lock reinforce to free sclerite fixation degree
Sub- screw.Screw thread is arranged in female screw rod of mother's screw and the sub- screw rod outer surface of sub- screw, and mother's screw diameter is greater than
Sub- screw diameter.Mother's screw runs through female nut lower part or female screw rod side wall setting and sub- screw by female nut top diagonal
The screw hole matched, sub- screw tail portion side wall and screw hole inside side walls setting matching screw thread.The sub- screw rod of sub- screw can by screw hole into
Female nut of female screw and female screw rod out.
Female screw rod all surfaces of mother's screw are respectively provided with screw thread, and the sub- screw rod all surfaces of the sub- screw are respectively provided with
Screw thread.
The screw hole is set as that two sections of internal diameters are inconsistent but the cylindric hole of axis line overlap.The screw hole closes on female spiral shell
Cap side transverse diameter is larger, matches with the sub- nut transverse diameter of sub- screw, and it is smaller that the screw hole closes on female screw rod side transverse diameter, with sub- spiral shell
The sub- screw diameter matching of nail.
The screw hole closes on female screw rod one end side wall and sub- screw rod closes on sub- nut one end side wall setting matching screw thread.
The central axes of the screw hole and female screw central axes angulation angle are 15 degree of -65 degree.
The sub- screw has lesser mobility in screw hole, makes sub- screw central axes and female screw central axes angulation
Angle change range is 0 degree of -20 degree.
Female screw diameter ratio of the sub- screw rod of the sub- screw and female screw is 0.2-0.7.
The sub- screw can make sub- nut most or all of in screw hole along screw hole precession mother's screw.
The most or all of sub- nut of the sub- screw can be in the screw hole in the mother's nut of female screw tail portion.
1-3 screw hole, the sub- screw of each equal configurations match of screw hole is arranged in the mother screw tail portion.The direction of each screw hole
Intersect but duct independently, each sub- screw can separately or concurrently by matched screw hole from female nut of female screw screw-in simultaneously
It is screwed out by female screw rod.
Mother's screw includes hollow nail and solid nail, and the sub- screw includes hollow nail and solid nail.
Advantages of the present invention: by the way that sub- screw is screwed in the screw hole being arranged on female screw, by female screw, sub- screw, fracture
Block and diaphysis are locked in an entirety, form internal bifurcated and expand, export narrow three-legged structure, keep free fractured type effective
It is fixed on diaphysis, method is simple, securely and reliably, is worthy to be popularized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the female screw of the present invention；
Fig. 3 is the structural schematic diagram of the sub- screw of the present invention；
Fig. 4 is the structural schematic diagram of another embodiment of the present invention.
Description of symbols: mother's 1- screw, mother's 11- nut, mother's 12- screw rod, 13- screw hole, 2- screw, 21- nut, 22-
Sub- screw rod, A- screw hole central axes and female screw central axes angulation angle and B- screw central axes and female screw central axes angulation angle
Degree.
Specific embodiment
Below with reference to specific attached drawing, the invention will be further described.
As shown in Figure 1, a kind of Screw, including being fixed on fracture line bonding position bone main body for the sclerite that dissociates
Female screw 1 and capable of locking with female 1 trailing end cross of screw is reinforced to the sub- screw 2 of free sclerite fixation degree.Mother's spiral shell
Screw thread is arranged in female screw rod 12 of nail 1 and 22 outer surface of sub- screw rod of sub- screw 2, and it is straight that mother's 12 diameter of screw rod is greater than sub- screw rod 22
Diameter.Mother's screw 1 runs through female 11 lower part of nut or female 12 side wall of screw rod setting and 2, sub- screw by female 11 top diagonal of nut
The screw hole 13 matched, sub- 2 tail portion side wall of screw and 13 inside side walls of screw hole setting matching screw thread.The sub- screw rod 22 of sub- screw 2 can lead to
Cross female nut 11 and female screw rod 12 that screw hole 13 passes in and out female screw 1.
When specifically used, female screw 1 of suitable types is first selected to screw in bone main body by the suitable position of floating bone block
And floating bone block is fixed on to the fracture of bone main body.Then sub- screw 2 is revolved by female aft mounted screw hole 13 of screw 1
Enter, until the head end of sub- screw 2 screws in bone main body and the threaded tail end of sub- screw 2 screws in the setting that screw hole 13 closes on female nut 11
Match one end of screw thread.In this way, female screw 1 and sub- screw 2 pass through the screw hole 13 of 1 tail end of female screw and the sub- nut of sub- screw 2
21 are locked into one, and head end separates and is fixed on the bottom of floating bone block and the shallow-layer position of bone main body, keep Screw whole
Body forms the triangular structure across fracture line, and female screw rod 12 of female screw 1 and the sub- screw rod 22 of sub- screw 2 form triangle
Main body, the ailhead of female screw 1 and the ailhead of sub- screw 2 form the bottom of triangle, and female nut 11 and sub- nut 21 overlap to form
Vertex of a triangle.When free sclerite stress, since triangular base area is larger, head end is small, and sclerite can not edge
The long axis of screw forms movement, and free sclerite will be firmly secured to bone main body fracture line position by Screw.
It must be noted that the appropriate model of so-called mother's screw 1 refers not only to the thickness and length of female screw 1, also wrap
Include the angle between 1 long axis of 13 long axis of screw hole and female screw of female 1 tail end of screw setting.The thickness of female screw 1 will be according to fracture
The size of block determines, but most thick diameter is preferably smaller than 8mm, uses in sturdy fracture site, as adult thighbone proximal end and shin bone are flat
The positions such as platform.Most carefully preferably greater than 1mm, uses, such as phalanges in tiny fracture site.The length of female screw 1 also will be according to fracture
The size of block selects, but can at least screw in bone main body after penetrating free sclerite.13 long axis of screw hole and female 1 long axis of screw it
Between angle selection should go out after screw hole 13 with the size of sclerite and the cooperation of the length of sub- screw 2, preferably sub- screw 2 in sclerite
Bottom just enters in bone main body after having a trip.
It should be avoided when implementation after sub- screw 2 goes out the screw hole 13 of female screw 1 and be directly entered bone main body, mother and sons' screw is avoided only to exist
Triangle is formed in bone main body, and triangle is not formed in sclerite.Deviate to avoid sub- screw 2 from only serving fixed female screw 1
Effect, and do not play the role of preventing free sclerite rotation.
12 all surfaces of female screw rod of mother's screw 1 are respectively provided with screw thread, can further strengthen female screw rod 12 and sclerite
And the frictional force between bone main body, it prevents female screw 1 from deviating from, reinforces fixation of female screw 1 to free fractured type.
22 all surfaces of sub- screw rod of the sub- screw 2 are respectively provided with screw thread, for the purposes of increase sub- screw 2 and sclerite and
Frictional force between bone main body prevents sub- screw 2 from deviating from, reinforces fixation of the sub- screw 2 to free fractured type.
As shown in Fig. 2, the screw hole 13 is set as, two sections of internal diameters are inconsistent but the cylindric hole of axis line overlap, described
It is larger that screw hole 13 closes on female 11 side transverse diameter of nut, matches with 21 transverse diameter of sub- nut of sub- screw 2, the screw hole 13 closes on female spiral shell
12 side transverse diameter of bar is smaller, 22 diameter matches of sub- screw rod with sub- screw 2.
By the setting of the thicker class conical bolt hole 13 of the thinner back segment in front end, female screw 1 and bone can be screwed in sub- screw 2
Block is limited, and so that the sub- nut 21 of sub- screw 2 is only can enter the thicker one end of screw hole 13 thinner without can enter screw hole 13
One end, sub- screw 2 screws in too deep when avoiding specifically used, reduce the locking relation of sub- screw 2 and female screw 1 instead, Gu
Determine effect to decline instead.
The screw hole 13 closes on female 12 one end side wall of screw rod and sub- screw rod 22 closes on sub- 21 one end side wall of nut setting matching
Screw thread.Matching screw thread is set in the lower end of sub- 22 tail end of screw rod of sub- screw 2 and screw hole 13, sub- 22 tail end of screw rod is enable to screw in screw hole
13 lower end increases the locking effect of female screw 1 and sub- screw 2.But it must be noted that 22 tail end of group screw rod and screw hole 13
Lower end setting matching screw thread when, the spacing and gradient of screw thread must be with the lockings of sub- 21 side wall of nut and 13 upper end of screw hole
Screw thread is consistent, and two parts locking screw contradicts each other when sub- screw 2 being avoided to screw in screw hole 13, and retraction is caused to be difficult to operate when operating
Or locking failure.Meanwhile should be synchronous in the screw-in diaphysis of sub- 22 top of screw rod when the lower end locking of the sub- screw-in of screw 2 screw hole 13,
That is the flight pitch of 22 tail end of thread screw rod on sub- 22 top of screw rod must be consistent with gradient, it is necessary to keep synchronizing
It screws in, otherwise the hole sidewalls or screw thread for screwing in diaphysis can be damaged, even result in the generation of stripped thread phenomenon.To sum up,
The sidewall thread of 22 front and back end of sub- screw rod and the inner thread of screw hole 13 of sub- screw 2 should all match, and the internal diameter that screw thread curls up is big
It is small to have any different, but the threaded spacing of institute must be consistent with gradient.That is: sub- screw 2 screw in screw hole 13, floating bone block and
When bone main body, all screw threads must be consistent along the effective speed that sub- 2 long axis direction of screw advances on sub- screw 2, in rotation process
Angle along axis rotation must be consistent.
Preferably 15 degree -65 of the 1 central axes angulation angle A degree in the central axes of the screw hole 13 and female screw.Angle Selection answers root
According to actual conditions, preferably according to above-mentioned " sub- screw 2 just penetrates fracture face after floating bone block has a trip and enters bone main body "
Principle selection.Sclerite is thicker, needs the angle of selection smaller；Sclerite is thinner, needs the angle of selection bigger.It is specific real
The female screw 1 that can be made into different angle, different length and different-diameter when applying is selected for clinical use person.
As shown in Figure 1, the sub- screw 2 has lesser mobility in screw hole 13, even if the transverse diameter of screw hole 13 is slightly
Transverse diameter is corresponded to slightly larger than sub- 2 tail end of screw, makes 1 central axes angulation angle B variation range 0 of sub- 2 central axes of screw and female screw
- 20 degree of degree.Pico- mobility needs the angle for screwing in screw hole 13 to sub- screw 2 to exist according to the state of an illness when in use convenient for user
The central axes in hole 13 are adjusted with further on the basis of 1 central axes angulation angle A of female screw；Also allow user logical simultaneously
Crossing screw hole 13 and screwing in the operation of sub- screw 2 has certain tolerance, and angle slightly deviation also can be smoothly by the sub- smoothly rotation of screw 2
Enter, avoids re-operating in unnecessary situation.
Preferably 15 degree -65 of the 1 central axes angulation angle A degree in the central axes of screw hole 13 and female screw, while 2 central axes of sub- screw
It is 0 degree of -20 degree with female 1 central axes angulation angle B variation range of screw, keeps the angle model of female screw 1 and screw hole 13 big
It is big to reduce.The central axes and female 1 central axes angulation angle of screw that screw hole 13 need to only be produced are 15 degree, 35 degree and 55 degree three types
Number, central axes and the mother's screw of the sub- screw 2 in screw hole 13 can be made in the direction of screw hole 13 by adjusting sub- screw 2 in use
1 central axes angulation angle change range is between 5 degree to 65 degree.
12 diameter proportion of female screw rod of the sub- screw rod 22 of the sub- screw 2 and female screw 1 is preferably 0.2-0.7, sub- screw 2
Diameter it is meticulous, sub- screw 2 necessarily declines the fixed effect of free sclerite；And the diameter of sub- screw 2 is excessively thick, then makes female spiral shell
The position for following closely 1 tail portion setting screw hole 13 can play the fragility that female nut 11 of support fixed effect becomes, and be easy to happen fracture.Implement
Shi Bixu takes into account the firmness of 1 tail portion of sub- screw 2 and female screw, more appropriate its ratio be 0.3 to 0.6.Certainly, implement
When also to take into account the size of the sub- nut 21 of sub- screw 2, the optimal proportion range of 11 transverse diameter of sub- 21 transverse diameter of nut and female nut is
0.2-0.7。
The sub- screw 2 can make sub- nut 21 most or all of embedded in screw hole along 13 precession mother screw 1 of screw hole
In 13.This requires 11 thickness of female nut of female screw 1 and 21 thickness proportion of sub- nut of sub- screw 2 more appropriate, it is desirable that female spiral shell
The thickness of cap 11 is greater than the vertical effective height that inclination screws in 13 tail end of screw hole of female nut 11.When it is implemented, can will be female
Nut 11 is done more thick and solid, and the sub- nut 21 of sub- screw 2 is slightly thin.Central axes and female screw of its thickness proportion with screw hole 13
The variation of 1 central axes angulation angle A and it is variant: angle A is smaller, and sub- nut 21 is inclined lighter, female nut 11 and sub- nut
21 difference in thickness are fewer；Angle A is bigger, and sub- nut 21 is inclined more serious, and female nut 11 and 21 difference in thickness of sub- nut are just
It is bigger.Certainly, difference in thickness requires the ratio also simultaneously with 11 transverse diameter of sub- 21 transverse diameter of nut and female nut to be positively correlated.
Screw thread can be arranged in head end in the sub- screw rod 22 of sub- screw 2 as shown in Figure 3, can also be respectively provided in entire sub- screw rod 22
Screw thread, for reinforcing fixed effect.But the sub- nut 21 of sub- screw 2 must be provided with screw thread, for reinforcing the locking of mother and sons' screw.
As shown in figure 4,2-3 screw hole 13, the sub- screw of the equal configurations match of each screw hole 13 is arranged in mother 1 tail portion of screw
2.The direction of each screw hole 13 intersect but duct independently, each sub- screw 2 can separately or concurrently pass through matched screw hole 13
It screws in from female nut 11 of female screw 1 and is screwed out by female screw rod 12.
Preferably one piece female screw 1 configures two pieces of sub- screws 2 when specific implementation, and two sub- 2 diameters of screw can be identical, can also
With not identical, but the screw hole 13 that should be arranged respectively with female 1 tail end of screw matches, and can pass through the sub- spiral shell in sub- screw 2 respectively
The matching screw thread of 21 surface of cap setting and the matching screw thread of 13 inner wall of place screw hole are locked in respective screw hole 13 with female screw 1
It is integrated.Female screw rod 12 of the sub- screw rod 22 of multiple sub- screws 2 and female screw 1 crosses one another respectively after locking, can penetrate free
The fracture face of sclerite and bone main body forms three-dimensional triangle body, further increases sclerite and is fixed on the secured of bone main body
Degree reduces a possibility that sclerite is deviate from from bone main body.Meanwhile the sub- nut 21 of multiple sub- screws 2 is then locked at mother respectively
The tail portion of screw 1 reduces the damage to sclerite, suffers from osteoporosis while keeping multiple Screw lockings integral
Person is especially suitable.
When fixed to sclerite using the present invention, the Screw of appropriate angle, thickness and length is first selected.Then with mother
Sclerite is fixed in bone main body by screw 1 with appropriate angle, and the direction of 1 tail end screw hole 13 of female screw is paid attention at the end of fixed,
When the direction of screw hole 13 reaches predeterminated position, the fixation of female screw 1 terminates.1-3 screw hole 13 along 1 tail portion of female screw is distinguished
It screws in the matched sub- screw 2 of number matches same size and locks, is i.e. completion fixed operation.When patients with fractures's healing needs to take out
When screw, reverse operating first screws out sub- screw 2 one by one, can screw out female screw 1, and all screws are all taken out.If using can
Absorbing material production Screw is then not necessarily to take out, can natural degradation absorption.
Mother's screw 1 includes hollow nail and solid nail；The sub- screw 2 includes hollow nail and solid nail.Wherein female spiral shell
The preferred hollow nail of nail 1, hollow duct is facilitated line and is positioned using Kirschner wire to female 1 screw-in direction of screw.Female screw 1 itself
Relatively thick, if positioning without using Kirschner wire, error operation can aggravate fracture and injury, increase bone defect, unfavorable to later period union.
Equally, it is identical to be arranged to hollow nail advantage for sub- screw 2.But when 2 diameter of group screw is too thin, hollow tunnel setting is more difficult,
It is internal to the marrow in the guidance backspin of the screw hole 13 of female 1 tail portion of screw to can be made into solid nail.
In a word: by the way that sub- screw 2 is screwed in the screw hole 13 being arranged on female screw 1, by female screw 1, sub- screw 2, sclerite
And diaphysis is locked in an entirety, forms internal bifurcated and expands, export narrow triangle body structure, keeps free fractured type effective
It is fixed on diaphysis, method is simple, securely and reliably, is worthy to be popularized.
Claims (8)
1. a kind of Screw, it is characterized in that: including the mother for being fixed on fracture line bonding position bone main body for the sclerite that dissociates
Screw (1) and capable of locking with female screw (1) trailing end cross is reinforced to the sub- screw (2) of free sclerite fixation degree；It is described
Screw thread, mother's screw rod (12) is arranged in female screw rod (12) of female screw (1) and sub- screw rod (22) outer surface of the sub- screw (2)
Diameter is greater than sub- screw rod (22) diameter；Mother's screw (1), which is provided with from female nut (11) top diagonal, runs through female nut
(11) lower part or female screw rod (12) side wall with sub- screw rod (2) matched screw hole (13), sub- screw (2) the tail portion side wall and institute
State screw hole (13) inside side walls setting matching screw thread；The sub- screw rod (22) of the sub- screw (2) can by the screw hole (13) into
Female nut (11) of female screw (1) and female screw rod (12) out；The screw hole (13) be set as two sections of internal diameters it is inconsistent but in
The cylindric hole of axis overlapping；Female nut (11) side transverse diameter that the screw hole (13) closes on female screw is larger, with institute
State sub- nut (21) the transverse diameter matching of sub- screw (2)；Female screw rod (12) side that the screw hole (13) closes on female screw is horizontal
Diameter is smaller, sub- screw rod (22) diameter matches with the sub- screw (2).
2. Screw according to claim 1, it is characterized in that: female screw rod (12) all surfaces of mother's screw (1) are equal
Screw thread is set；Sub- screw rod (22) all surfaces of the sub- screw (2) are respectively provided with screw thread.
3. Screw according to claim 1, it is characterized in that: the screw hole (13) close on female screw rod (12) one end side wall and
Sub- screw rod (22) closes on sub- nut (21) one end side wall setting matching screw thread.
4. Screw according to claim 1, it is characterized in that: the central axes of the screw hole (13) and female screw (1) axis
Line angulation angle (A) is 15 degree of -65 degree.
5. Screw according to claim 1, it is characterized in that: the sub- screw rod (22) of the sub- screw (2) and female screw (1)
Female screw rod (12) diameter proportion be 0.2-0.7.
6. Screw according to claim 1, it is characterized in that: the sub- screw (2) is along screw hole (13) precession mother screw (1)
It is interior sub- nut (21) to be made most or all of in screw hole (13).
7. -6 any Screw according to claim 1, it is characterized in that: 1-3 screw hole is arranged in mother screw (1) tail portion
(13), the sub- screw (2) of each screw hole (13) configurations match；The direction of each screw hole (13) intersect but duct independently,
Each sub- screw (2) can be separately or concurrently by matched screw hole (13) from female nut (11) of female screw (1) screw-in and by mother
Screw rod (12) screws out.
8. Screw according to claim 1, it is characterized in that: mother's screw (1) includes hollow nail or solid nail；It is described
Sub- screw (2) includes hollow nail or solid nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610385251.5A CN106073872B (en) | 2016-06-03 | 2016-06-03 | Screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610385251.5A CN106073872B (en) | 2016-06-03 | 2016-06-03 | Screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106073872A CN106073872A (en) | 2016-11-09 |
| CN106073872B true CN106073872B (en) | 2019-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610385251.5A Active CN106073872B (en) | 2016-06-03 | 2016-06-03 | Screw |
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| Country | Link |
|---|---|
| CN (1) | CN106073872B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202113159U (en) * | 2011-06-14 | 2012-01-18 | 张风银 | Novel bone screw |
| CN102715945A (en) * | 2012-06-08 | 2012-10-10 | 浙江科惠医疗器械有限公司 | Corner locking hollow screw for fracture treatment |
| CN205729488U (en) * | 2016-06-03 | 2016-11-30 | 路通 | Screw |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100137872A1 (en) * | 2008-12-03 | 2010-06-03 | Linvatec Corporation | Drill guide for cruciate ligament repair |
-
2016
- 2016-06-03 CN CN201610385251.5A patent/CN106073872B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202113159U (en) * | 2011-06-14 | 2012-01-18 | 张风银 | Novel bone screw |
| CN102715945A (en) * | 2012-06-08 | 2012-10-10 | 浙江科惠医疗器械有限公司 | Corner locking hollow screw for fracture treatment |
| CN205729488U (en) * | 2016-06-03 | 2016-11-30 | 路通 | Screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106073872A (en) | 2016-11-09 |
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